Toranomon Hills Station Tower
OMA NY, Courtesy Mori Building Co., Ltd.

OMA / Shohei Shigematsu’s Toranomon Hills Station Tower in Tokyo to Open in Fall 2023

OMA as Architects

The opening of the Toranomon Hills Station Tower will mark the significant completion of Mori Building’s Toranomon Hills development, a new international urban hub and global business center. A multi-layered transportation node and network integrated into the tower will establish a new gateway connecting Central Tokyo and the world. The project will be OMA’s first tower in Tokyo, and in Japan. February 1, 2023–Tokyo, JP–Mori Building Co., Ltd., a leading urban developer, unveiled on January 24th, 2023, new renderings and identity of Toranomon Hills, and announced the Fall 2023 opening date of Toranomon Hills Station Tower (the Station Tower). 

photo_credit OMA NY, Courtesy Mori Building Co., Ltd.
OMA NY, Courtesy Mori Building Co., Ltd.

Located in Toranomon Hills “Global Business Center” near Kasumigaseki—adjacent to ARK Hills, a lifestyle and cultural  center, and within walking distance from Roppongi Hills “Cultural Heart of Tokyo” and Azabudai Hills “Modern Urban Village,”—the Station Tower will stand at the terminus of Shintora-dori Avenue, Tokyo’s newly configured axial  thoroughfare connecting Tokyo Bay to city center. The tower will add to, and connect, a series of freestanding mixed use developments to establish Toranomon Hills as the new global hub of Tokyo.The Station Tower is a mixed-use, high-rise tower spanning 49-floors and reaching 266 m in height. Comprised of offices, commercial spaces, hotels and interactive communication facility TOKYO NODE, the tower will be integrated  to the newly opened Tokyo Metro Hibiya Line station (2020) and function as a major transportation hub for Tokyo and beyond.

photo_credit OMA NY, Courtesy Mori Building Co., Ltd.
OMA NY, Courtesy Mori Building Co., Ltd.

“Our first tower in Tokyo is dedicated to connections, to its high-rise neighbors and diverse neighborhood networks. The Station Tower confronts and resonates with the three-dimensionality of Tokyo’s urban environment that steers people through stacks and layers of places and activities. It’s shaped by a central activity band that allows life around the tower to lead into, up and over, and through its potentially sobering scale. Carved, bisected, and shifted in form from base to top, it spatially and programmatically opens up to new links—to Shintora-dori, the bay area, the new  pedestrian and green network of Toranomon Hills Area, the greater Tokyo Metro network, and the global network of creatives that will activate TOKYO NODE,” said Shohei Shigematsu, OMA Partner. 

photo_credit OMA NY, Courtesy Mori Building Co., Ltd.
OMA NY, Courtesy Mori Building Co., Ltd.

To create the necessary, highly public interface to the tower, OMA has designed a building as an extension of the nature and activities of Shintora-dori Avenue. The base of the building, expressed as a large funnel, will open the heart  of the building to draw the public inward. The T-DECK, a large-scale pedestrian bridge, will emphatically link the tower to the diverse Toranomon Hills developments to improve circulation and forge a lively network of activities and greenery.
The bridge sectionally divides and defines two public zones at the tower base, an Upper Atrium and the Station Atrium below. The Station Atrium will integrate the development to the Tokyo Metro Hibiya Line. The Station Atrium, a three story concourse flooded with natural light, will be the first of its kind in Tokyo and provide an exciting sense of arrival.

photo_credit OMA NY, Courtesy Mori Building Co., Ltd.
OMA NY, Courtesy Mori Building Co., Ltd.

The public activity at the base will extend vertically to form a central band of special areas for tower tenants.The top of the tower will be home to TOKYO NODE, a new type of facility devised together with Mori Building. A hybrid  of flexible venue and innovative forum, it will be an interactive communication facility including halls, galleries, studio, garden, pool, and restaurants. TOKYO NODE will gather creative people and ideas to catalyze new values and  experiences, disseminating content and information created by enhancing collaborations that transcend domains such as business, art, entertainment, technology, and fashion. Together with Mori Tower (2014), Business Tower (2020), and Residential Tower (2022), and the opening of the Station  Tower will mark the continued evolution of Toranomon Hills—a 7.5 ha and approximately 800,000 m2 new  neighborhood in Central Tokyo. Additional transportation infrastructure such as roads, bus terminal, subways, and  pedestrian decks will be integrated in the future to complete the new international hub and global business center comparable to the scale of Roppongi Hills.

photo_credit OMA NY ©The Boundary
OMA NY ©The Boundary

Tokyo is a large city that has been cultivating areas with distinct characters. The experience of the city is diverse and dynamic, like an à la carte–style dinner, where people share different dishes and make conversation across the table. But  recent large-scale mixed-use developments across the different neighborhoods seem to share an all too similar assembly of programs within an efficient container—a bento box as opposed to à la carte. The bento boxes have been multiplying, and what used to be a very diverse experience within the city is becoming increasingly homogeneous and predictable.

photo_credit OMA NY ©DBOX for Mori Building Co., Ltd.
OMA NY ©DBOX for Mori Building Co., Ltd.

In the proliferation of the bento box, no matter how much architects try to differentiate the character of mixed-use buildings through form and facade, we’re faced with a dilemma: if the ingredients are the same, the experience within the container is inherently the same. How can we design a mixed-use building that embodies the maximum potential of the mix and stimulates an unexpected affair between building and the city?

photo_credit OMA NY ©DBOX for Mori Building Co., Ltd.
OMA NY ©DBOX for Mori Building Co., Ltd.

Our site lies inside Toranomon Hills “Global Business Center,” near Kasumigaseki, Japan’s hub, and adjacent to ARK Hills, a lifestyle and cultural center, and within walking distance from Roppongi Hills “Cultural Heart of Tokyo” and Azabudai Hills “Modern Urban Village”. The tower will stand at the terminus of Shintora-dori Avenue, Tokyo’s newly configured axial thoroughfare connecting Tokyo Bay to the city center. In the vicinity of the site, a series of freestanding mixed-use developments have begun to establish the Toranomon Hills Area as a place to live, work, and play. How can we make a tower dedicated to connections—including one that forms a new business network through mixed-use towers and reflects  the energy of the surrounding neighborhoods? How can the high-rise integrate public amenities into known office, hotel, and retail programs for an unexpected experience of the mixed-use?

photo_credit OMA NY ©DBOX for Mori Building Co., Ltd.
OMA NY ©DBOX for Mori Building Co., Ltd.

Our approach is a highly public interface to the tower. The core is lifted and split to either side of the tower’s base, opening up the heart of the building and drawing the public inward. The nature and activities of Shintora-dori Avenue extend into and through the tower via an elevated pedestrian bridge, emphatically linking the area’s towers together to create a network of activities and greenery.The bridge sectionally divides the base into two retail zones. The lower zone“the Station Atrium” provides direct access to  the new Hibiya Line subway station (Toranomon Hills Station), connecting the tower to the greater region. Within, a grand atrium and subway station concourse flooded with natural light, the first of its kind in Tokyo, provides an exciting sense of arrival. The public activity at the base extends vertically to form a central band of special areas for tenants throughout the tower. 

photo_credit OMA NY ©DBOX for Mori Building Co., Ltd.
OMA NY ©DBOX for Mori Building Co., Ltd.

The building is shaped to reveal the band from multiple vantage points, making it visible from anywhere in Tokyo. Two slabs sandwiching the central band are formed in inverted symmetry. The north slab begins wide at the base and narrows as it reaches the top in deference to the Imperial Palace. The south slab is narrowest at its base and widens as it rises, maximizing views of the Roppongi Hills skyline and Tokyo Tower.In balance with the highly public base, we capped the tower with an additional public amenity. “TOKYO NODE” is a new type of program we devised in collaboration with Mori Building—an interactive communication facility, hybrid of flexible event space and innovative forum. It anchors the tower as a global business center that engages the innovative and creative networks and disseminating new values and experiences in the area and beyond. On the roof, a landscaped terrace provides a lush garden with an infinity pool and a flexible event space accommodates private or public gatherings. By inserting highly public and dynamic environments at the base and at the top, the experience both within and around the tower is made less predictable, unboxing the bento box and remixing the mixeduse.

photo_credit OMA NY ©DBOX for Mori Building Co., Ltd.
OMA NY ©DBOX for Mori Building Co., Ltd.
photo_credit OMA NY ©DBOX for Mori Building Co., Ltd.
OMA NY ©DBOX for Mori Building Co., Ltd.
photo_credit OMA NY ©DBOX for Mori Building Co., Ltd.
OMA NY ©DBOX for Mori Building Co., Ltd.

Team:
Lead Design Architect: OMA New York

Partner: Shohei Shigematsu

Associates: Takeshi Mitsuda, Jake Sadler-Foster, Luke Willis

Team: Yuzaburo Tanaka, Sumit Sahdev, Yoshiki Matsuda, Anahita Tabrizi, Sergio Zapata, Timothy Tse, Yusef Ali Dennis, Stavros Voskaris, Tommaso Bernabo Silorata, Jackie Woon Bae, Eduardo Tazon Maigre, Tristan Zelic, Noam Dvir, Remy Bertin, Juan Pablo Zepeda, Mitchell Lorberau, Alan Song, Sukjoo Hong, Ken Chongsuwat, Caroline Corbett, Ninoslav Krgovic, Natasha Trice, Toru Okada, Timothy Ho, Andrea Zalewski, Alyssa Murasaki Saltzgaber, Chong Ying Pai, Minkoo Kang, Joanne Chen, Jeremy Kim, Daeho Lee, Mattia Alfieri, Tetsuo Kobayashi, Assaf Kimmel, Aishwarya Keshav, Danni Zhang, Yuriko Tanabe, Taro Kagami, Tomotsugu Ishida, Bom Chinburi, Jade Kwong, Phillip Denny, Miguel Darcy, Eugenia Bevz, Shary Tawil, Wesley Ho, Nicholas Solakian, Carly Dean, Elly Cho, Tamara Jamil, Matthew Davis, Darby Foreman

Executive Architect: Mori Building Co., Ltd., Kume Sekkei

Structure: Kume Sekkei

Structure (competition): Arup

MEP/FP: Kume Sekkei

Façade: Kume Sekkei, Arup Japan

Bridge: NEY & Partners

Interior Lightning: Arc Light Design

Exterior Lighting: L'Observatoire International

Model: Vincent de Rijk

General Contractor: Kajima Corporation

photo_credit OMA NY, Mori Building Co., Ltd.
OMA NY, Mori Building Co., Ltd.
photo_credit OMA NY, Mori Building Co., Ltd.
OMA NY, Mori Building Co., Ltd.
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